Let ( = {-2, - 1, 3, 7}, and let measure be defined by: ({-2})

Let ( = {-2, - 1, 3, 7}, and let measure μ be defined by: μ ({-2}) = 2, μ({- 1}) = 1, μ({3}) = 3, μ ({7}) = 7. Let X be a r.v. defined by: X(- 2) = X(- 1) = - 1, and X(3) = X(7) = 1. Then, for a = {-2, 3, 7}, compute the integral fA Xd μ.